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21.
Zhang Z Olland AM Zhu Y Cohen J Berrodin T Chippari S Appavu C Li S Wilhem J Chopra R Fensome A Zhang P Wrobel J Unwalla RJ Lyttle CR Winneker RC 《The Journal of biological chemistry》2005,280(31):28468-28475
Progesterone receptor (PR) agonists have several important applications in women's health, such as in oral contraception and post-menopausal hormone therapy. Currently, all PR agonists used clinically are steroids. Because of their interactions with other steroid receptors, steroid-metabolizing enzymes, or other steroid-signaling pathways, these drugs can pose significant side effects in some women. Efforts to discover novel nonsteroidal PR agonists with improved biological properties led to the discovery of tanaproget (TNPR). TNPR binds to the PR from various species with a higher relative affinity than reference steroidal progestins. In T47D cells, TNPR induces alkaline phosphatase activity with an EC(50) value of 0.1 nm, comparable with potent steroidal progestins such as medroxyprogesterone acetate (MPA) and trimegestone (TMG), albeit with a reduced efficacy ( approximately 60%). In a mammalian two-hybrid assay to measure PR agonist-induced interaction between steroid receptor co-activator-1 and PR, TNPR showed similar potency (EC(50) value of 0.02 nm) and efficacy to MPA and TMG. Importantly, in key animal models such as the rat ovulation inhibition assay, TNPR demonstrates full efficacy and an enhanced progestational potency (30-fold) when compared with MPA and TMG. Furthermore, TNPR has relatively weak interactions with other steroid receptors and binding proteins and little effect on cytochrome P450 metabolic pathways. Finally, the three-dimensional crystal structure of the PR ligand binding domain with TNPR has been delineated to demonstrate how this nonsteroidal ligand achieves its high binding affinity. Therefore, TNPR is a structurally novel and very selective PR agonist with an improved preclinical pharmacological profile. 相似文献
22.
Ullrich JW Unwalla RJ Singhaus RR Harris HA Mewshaw RE 《Bioorganic & medicinal chemistry letters》2007,17(1):118-122
The design, synthesis, and biological evaluation of the 2-phenyl-isoindole-1,3-diones will be discussed. Detailed modeling studies with X-ray support were used to understand the ligand binding orientation and observed selectivity. 相似文献
23.
Henke BR Adkison KK Blanchard SG Leesnitzer LM Mook RA Plunket KD Ray JA Roberson C Unwalla R Willson TM 《Bioorganic & medicinal chemistry letters》1999,9(23):3329-3334
The synthesis and structure-activity relationships of a novel series of indole 5-carboxylic acids that bind and activate peroxisome proliferator-activated receptor gamma (PPARgamma) are reported. These new analogs are selective for PPARgamma vs the other PPAR subtypes, and the most potent compounds in this series are comparable to in vitro potencies at PPARgamma reported for the thiazolidinedione-based antidiabetic drugs currently in clinical use. 相似文献
24.
Ronald C. Bernotas David H. Kaufman Robert R. Singhaus John Ullrich Rayomand Unwalla Elaine Quinet Ponnal Nambi Anna Wilhelmsson Annika Goos-Nilsson Jay Wrobel 《Bioorganic & medicinal chemistry》2009,17(23):8086-8092
A series of 4-(3-aryloxyaryl)quinolines with alcohol substituents on the terminal aryl ring was prepared as potential LXR agonists, in which an alcohol group replaced an amide in previously reported amide analogs. High affinity LXR ligands with excellent agonist potency and efficacy in a functional model of LXR activity were identified, demonstrating that alcohols can substitute for amides while retaining LXR activity. The most potent compound was 5b which had an IC50 = 3.3 nM for LXRβ binding and EC50 = 12 nM (122% efficacy relative to T0901317) in an ABCA1 mRNA induction assay in J774 mouse cells. 相似文献
25.
Hu B Quinet E Unwalla R Collini M Jetter J Dooley R Andraka D Nogle L Savio D Halpern A Goos-Nilsson A Wilhelmsson A Nambi P Wrobel J 《Bioorganic & medicinal chemistry letters》2008,18(1):54-59
A series of potent and binding selective LXRbeta agonists was developed using the previously reported non-selective LXR ligand WAY-254011 as a structural template. With the aid of molecular modeling, it was found that 2,3-diMe-Ph, 2,5-diMe-Ph, and naphthalene substituted quinoline acetic acids (such as quinoline 33, 37, and 38) showed selectivity for LXRbeta over LXRalpha in binding assays. 相似文献
26.
Zhang P Terefenko E Kern J Fensome A Trybulski E Unwalla R Wrobel J Lockhead S Zhu Y Cohen J Lacava M Winneker RC Zhang Z 《Bioorganic & medicinal chemistry》2007,15(20):6556-6564
We have recently discovered 5-(3-cyclopentyl-2-thioxo-2,3-dihydro-1H-benzimidazol-5-yl)-1-methyl-1H-pyrrole-2-carbonitrile (14) as a potent, selective, and orally active non-steroidal progesterone receptor (PR) agonist. Compound 14 and its analog 13 possessed sub-nanomolar in vitro potency (EC(50) 0.1-0.5nM) in the T47D alkaline phosphatase assay, similar to that of the steroidal PR agonist medroxyprogesterone acetate (MPA). In contrast to MPA, 14 was highly selective (>500-fold) for the PR over both glucocorticoid and androgen receptors. In the rat uterine decidualization and complement component C3 models, 14 had oral ED(50) values of 0.02 and 0.003mg/kg, respectively, and was from 6- to 20-fold more potent than MPA. In the monkey ovulation inhibition model, compound 14 was also highly efficacious and potent with an oral ED(100) of 0.03mg/kg. 相似文献